Comparison between α and proton sequential emission in 16O(132 MeV)+58Ni deep inelastic collisions -: art. no. 054607

The O-16+Ni-58 deep-inelastic collision has been investigated at E-lab(O-16)=132 MeV by using coincident charged particle techniques. Exclusive data of the projectilelike fragments (C, N, and O) and their associated light charged particles (protons and alpha particles) were collected in coincidence. The experiment has been performed at the IReS Strasbourg VIVITRON Tandem facility by using the ICARE charged particle multidetector array. The measured velocity diagrams and in-plane angular correlations have been analyzed by a semiclassical model that combines equilibrium and nonequilibrium processes of a deep-inelastic scattering reaction. Following the hypothesis of a sequential process, this closed-form theoretical approach is applied to the measured [(C,N,O)-p] and [(C,N,O)-alpha] differential multiplicities. Estimates on polarization phenomena and on "decay times" are used to provide information about deep-inelastic scattering in O-16+Ni-58 at 8.25 MeV/nucleon.